Anonymous cost estimate. Returns $low–$high range computed from regional + case factors. Deterministic on identical inputs. PII fields are rejected — use quote_for_case for the PII path.
Part of the VetClinic Info — Veterinary Specialty Directory server.
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AI agents call estimate_procedure_cost to retrieve information from VetClinic Info — Veterinary Specialty Directory without modifying any data. This is common in research, monitoring, and reporting workflows where the agent needs context before taking action. Because read operations don't change state, they are generally safe to allow without restrictions -- but you may still want rate limits to control API costs.
Even though estimate_procedure_cost only reads data, uncontrolled read access can leak sensitive information or rack up API costs. An agent caught in a retry loop could make thousands of calls per minute. A rate limit gives you a safety net without blocking legitimate use.
Read-only tools are safe to allow by default. No rate limit needed unless you want to control costs.
{
"version": "1",
"default": "deny",
"tools": {
"estimate_procedure_cost": {}
}
}See the full VetClinic Info — Veterinary Specialty Directory policy for all 8 tools.
These attack patterns abuse exactly the kind of access estimate_procedure_cost gives an agent. Each links to the full case and the policy that stops it:
Other read tools across the catalogue. The same approach applies to each: allow, with a rate cap to control cost.
Anonymous cost estimate. Returns $low–$high range computed from regional + case factors. Deterministic on identical inputs. PII fields are rejected — use quote_for_case for the PII path.. It is categorised as a Read tool in the VetClinic Info — Veterinary Specialty Directory MCP Server, which means it retrieves data without modifying state.
Register the VetClinic Info — Veterinary Specialty Directory MCP server in PolicyLayer and add a rule for estimate_procedure_cost: allow, deny, rate-limit, or require approval. Point your MCP client at the PolicyLayer proxy URL and the rule is enforced on every call, before it reaches VetClinic Info — Veterinary Specialty Directory. Nothing to install.
estimate_procedure_cost is a Read tool with low risk. Read-only tools are generally safe to allow by default.
Yes. Add a rate_limit block to the estimate_procedure_cost rule in your PolicyLayer policy. For example, setting max: 10 and window: 60 limits the tool to 10 calls per minute. Rate limits are tracked per agent session and reset automatically.
Set action: deny in the PolicyLayer policy for estimate_procedure_cost. The AI agent will receive a policy violation error and cannot call the tool. You can also include a reason field to explain why the tool is blocked.
estimate_procedure_cost is provided by the VetClinic Info — Veterinary Specialty Directory MCP server (https://vetclinic.info/mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
Deterministic rules across all 8 VetClinic Info — Veterinary Specialty Directory tools. Per-identity grants. Full audit log. Live in minutes. Nothing to install.
Free to start. No card required.
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